/* * Copyright 2005 Red Hat, Inc. and/or its affiliates. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package org.drools.eclipse.flow.common.editor.core.command; import org.drools.eclipse.flow.common.editor.core.ElementConnection; import org.drools.eclipse.flow.common.editor.core.ElementWrapper; import org.eclipse.gef.commands.Command; /** * A command for reconnecting the source of a connection. */ public class ReconnectElementConnectionSourceCommand extends Command { private ElementConnection connection; private ElementWrapper target; private ElementWrapper oldSource; private ElementWrapper newSource; public boolean canExecute() { if (connection.getTarget().equals(newSource)) return false; for (ElementConnection connection : newSource.getOutgoingConnections()) { if (connection.getTarget().equals(target) && !connection.getSource().equals(oldSource)) return false; } return newSource.acceptsOutgoingConnection(connection, target); //XXX } public void execute() { if (newSource != null) { connection.disconnect(); connection.connect(newSource, target); } } public void setSource(ElementWrapper source) { this.newSource = source; } public void setConnection(ElementConnection connection) { this.connection = connection; this.target = connection.getTarget(); this.oldSource = connection.getSource(); } public void undo() { connection.disconnect(); connection.connect(oldSource, target); } public void redo() { connection.disconnect(); connection.connect(newSource, target); } }